ARM: exynos_defconfig: Enable support for cpufreq on Exynos SoCs

This commit enables the cpufreq subsystem. Moreover, support
for using CPU as a cooling device is provided.
Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
Signed-off-by: Kukjin Kim <kgene@kernel.org>

arch/arm/configs/exynos_defconfig

@@ -91,6 +91,8 @@ CONFIG_CHARGER_MAX77693=y
 CONFIG_CHARGER_TPS65090=y
 CONFIG_HWMON=y
 CONFIG_SENSORS_LM90=y
+CONFIG_CPU_FREQ=y
+CONFIG_CPU_THERMAL=y
 CONFIG_THERMAL=y
 CONFIG_EXYNOS_THERMAL=y
 CONFIG_THERMAL_EMULATION=y